<!DOCTYPE html>
<meta charset="utf-8">
<title>:has() invalidation with nesting where the selector is shared</title>
<link rel="author" title="David Shin" href="mailto:dshin@mozilla.com">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="help" href="https://drafts.csswg.org/selectors/#relational">
<style>
div, main { color: grey }
#outer1:has(.test) {
  & #subject1_1 {
    color: red;
  }
  & + #subject1_2 {
    color: orangered;
  }
}

#outer2:has(.test) {
  & .ancestor {
    & #subject2_1 {
      color: green;
    }
    & + #subject2_2 {
      color: lightgreen;
    }
  }
}

#outer3:is(:has(.test) .outer) {
  & #subject3_1 {
    color: blue;
  }
  & + #subject3_2 {
    color: skyblue;
  }
}
</style>
<main id="main">
  <div>
    <div id="outer1">
      <div id="trigger1"></div>
      <div id="subject1_1"></div>
    </div>
    <div id="subject1_2"></div>
  </div>
  <div id="outer2">
    <div id="trigger2"></div>
    <div class="ancestor">
      <div id="subject2_1"></div>
    </div>
    <div id="subject2_2"></div>
  </div>
  <div id="trigger3">
    <div id="outer3" class="outer">
      <div id="subject3_1"></div>
    </div>
    <div id="subject3_2"></div>
  </div>
</main>
<script>
const grey = 'rgb(128, 128, 128)';
const red = 'rgb(255, 0, 0)';
const orangered = 'rgb(255, 69, 0)';
const green = 'rgb(0, 128, 0)';
const lightgreen = 'rgb(144, 238, 144)';
const blue = 'rgb(0, 0, 255)';
const skyblue = 'rgb(135, 206, 235)';

const colors = {
  red: {
    descendant: red,
    sibling: orangered,
  },
  green: {
    descendant: green,
    sibling: lightgreen,
  },
  blue: {
    descendant: blue,
    sibling: skyblue,
  },
};

function testColor(testName, element, color) {
  test(function() {
    assert_equals(getComputedStyle(element).color, color);
  }, testName);
}

function testClassChange(trigger, targetDescendant, targetSibling, expected)
{
  trigger.classList.add('test');
  testColor(`add .test to ${trigger.id} - check ${targetDescendant.id}`, targetDescendant, colors[expected].descendant);
  testColor(`add .test to ${trigger.id} - check ${targetSibling.id}`, targetSibling, colors[expected].sibling);
  trigger.classList.remove('test');
  testColor(`remove .test from ${trigger.id} - check ${targetDescendant.id}`, targetDescendant, grey);
  testColor(`remove .test from ${trigger.id} - check ${targetSibling.id}`, targetSibling, grey);
}

testClassChange(trigger1, subject1_1, subject1_2, 'red');
testClassChange(trigger2, subject2_1, subject2_2, 'green');
testClassChange(trigger3, subject3_1, subject3_2, 'blue');

</script>
